Rotary pump.



i 14o.- s93,47o. Patenfenreb. |a,"|eao2.`

. l G. A. WALKER. f

ROTARY PUMP.

(Appumion med Apr. s?, mom

(Nn Model.) ashun-sheets.

immuni shipperfork A6.

UNITED STATES PATENT EEICE. l

GEORGE A. WALKER, OE CHICAGO, ILLINOIS, AssIGNORTOrIIE CREAMERY PACKAGEMANUFACTURING COMPANY, OE CHICAGO, ILLINOIS, A COR- PORATION OFILLINOIS- ROTARY- PUMP.

sPEcIErcArroN forming part of Letters 'ramt No. 693,470, atea Februaryf1e, 1902'.

Appleman niet Aprila?, 190'1. seora 57,733. (Nqnoda-.i

Ilo-til whom it may con/cervi: i

Be it known that I, GEORGE A. WALKER, a

citizen of the United States, residing at Chi?.

cago, in the county of vCook and State of Illi nois, have inventedcertain newand ul'ie'full Improvements in Rotary Pumps,'of which thefollowing is a speciication. l

, The object of this invention is the production of an improved rotarypump.

In the accompanying drawings, Figure il is; l

lings A and A2 and provided withv the usual a side elevation of a rotarypump embodying the features of my invention.y Fig. 2 is a longitudinalvertical central section throughpthe pump. Fig. 3 is a `fragmentalperspective view of the cylinder end of the pump, 1show-y ing `the meansfor detachably `securing the cylinder in position. Fig. L.tis aviewsimilar to the preceding one, showing the means of attachment disengagedand the cylinder with# drawn from the rotary pump-head. Fig. 5 is atransverse section on dotted line 5 5 of Fig. l. Fig. 6 is aperspectiveview of the'vanes of the pump-head.

Like letters of reference indicate corresponding parts throughout theseveralviews.

In the construction of this pump I provide 'a supporting-frame A, havingthe bearings A' and A2 for the pump-shaft. The bearing A-' is providedwith a stuffing-box A3 to prevent leakage from the pump-cylinder, andthe bearing A2 is formed with an extending sleeve A4 for supporting thelarm A5 for .thef` A face-plate A1, integral with the supporting-frameA, is finished upon one side to receive the cylinder, to be laterdescribed herein. The outline of this faceplate is somewhat of lozengeshape, the bearing A being located a little to one side of its middleportion. Near the lower end of the lozenge-shaped plate A7 is anintake-port A8, communicating with the supply-pipe A9, and near theupper part of said plate A7 is the discharge-port A10, communicatingwith the discharge-pipe A11. Au arm A1?, pivotally mounted upon the studA1S at the lower side of said face-,plate A1, and a similar arm A14,pivotally. mounted upon the stud A15, near the upper part of saidface-plate, support the hand-screws A16, threaded throughopenings in theouter ends of said arms, the purpose of these screws being to detachablysepump-head B3. one `piece and is adapted to vlie in the openingv vB5 ofthe 'pump-head B3. The other vane is"` similar to the vane C', exceptingthat it isv A .y ycure cylinder in place upon the tace-plate A7. The hubof the arm A14 is provided with la lprojection A17, adapted to engagethe ad-v jacent portion of the supporting-frame A to limit the rotatorymovement of said arm.l

A18 represents depressions in the face-plate A7, adapted to receiveguide-pins (tdbe' later latter with relation to the face-plate A7.

B is a shaft rotatably supported in thebeartight and loose pulleysB andB2, respectively. Near its opposite end the shaftB is provided with thecylindrical pump '-head B3, having described) in the cylinderforcentering the 6o diametric openings B4 and B5 extending 1* throughsaidpu mp-head substantially at right angles toeach other.-Intheseopenings Iplace v the twov sliding kvanes, to be next described.The end of the shaft B projects beyond tho der, 'tobe later described.

(l represents the two sliding vanos for `the The vane C is formedinformed in the two halves-or parts()2 and O3. The part C2 has theprojecting Iingers C4a11d 0,5, and the partC? similar'ngers C6 and C7,thelatter pair being adapted to lie inside of the'formerand all tointerlace, lying edge to edge.

part vane is matched together, asy shown. It

v7o l end ofthe pump-head Bs and finds a bearing,v

rIn the operation of the pump the twohas'the same movement asthe'sliding vane butfis made in `two parts in order that vthe vanes mayreadily be removed from the pump-Y D is the pump-cylinder, having a borecon-` siderably larger than the diameter of the pump-head. Its verticaldiameter isalittle greater than its horizontal diameter, it beingslightly elliptical in order that the sliding vanes C may contact thesidesof the cylinder. Its horizontal diameter therefore cor- IOO peccentric to the pump-head. At the lower part of the cylinder andopening to the interior thereof is a pocket D3, communicating with theintake-port A8, and at the opposite side of the cylinder, alsocommunicating with the interior thereof, is the pocket D4, coincidingwith the discharge-port A10 in thesupporting-frame A. The outer end ofthe cylinder D is closed by the cylinder-head D5, formed integral withlthe cylinder or tightly fixed thereto in any suitable manner. In thiscas'e I have secured the head to the cylinder, employing the set-screwsD for that purpose. A bearing-bushing D7 is screwthreaded in a suitableopening in the cylinder-head D5, its position being concentric with thepump-head B3 and its purpose to `provide a removable bearing for the endof the rotatory shaft B. A recess DB on the inner face of thecylinder-head D5, concentric with the bearing bushing D7, forms abearing for the outer end of the pump -head B3, and a pocket D9, formedin the inner walls of the cylinder at the upper side thereof, providesan escape-port for the liquid remaining in the spacebetween thepump-'head Baand the cylinder after each vane passes the pocket D4.

E represents a priming apparatus for supplying a small quantity ofliquid to the pump upon starting the latter. E is the funnel of saidprimer; E2, a pipe communicating with the interior of the funnel and thedischargeport D4; E3, a valve-plug seated in said pipe; E4, a portformed in said plug, and E5 a handlever for turning said valve-plug.

In operation the intake-port A8 is connected with the supply and thedischarge-port A10 connected as desired. Water is introduced into thecylinder to prime the pump, if that is desirable, by filling the funnelE and opening the valve-plug E3. When the pump is started, the valve E3is closed. Power is communicated to the pump by means of a belt passingover the tight pulley H, and the pump-head is thus rotated. Thepump-head B3 being eccentric to the cylinder D, the vanes C, extendingthrough said diametric openings in said pump-head, will be slid backwardand forward through said openings as the pump-head rotates. Liquid isdrawn through the intake port AS, forced by said vanes through thecrescent-shaped portion of the cylinder D not occupied by the pump-headB3, and from thence Outward through the discharge-port A10.

Pumps embodying thisin vention are adapted for elevating milk and otherperishable liquids, the handling of which necessitates a frequent andthorough cleansing of the pump and pipes.

I claim as my invention-- l. In a rotary pump, in combination,asupporting-frame having a face-plate with intake and discharge openingstherein a pumpcylinder having a face-plate with intake and dischargeports, which ports are adapted to coincide with the openings in theface-plate of said supporting-frame; a head forsaid cylinder;afbearing-bushing in said cylinderhead; a rotatable shaft journaled insaid snpporting-frame and in said bearing-bushing; a pump-head securedto said shaft, which pump-head comprises vaues slidably mounted inopenings extending through said pumphead; and pivotal armshaving screwsfor detachably securing the complete cylinder to said supporting-frame.

2. In a rotary pump, in combination, a supporting-frame having aface-plate with intake and discharge openings therein, which openingscommunicate with intake and discharge pipes; a rotatable pump-headjournaled in said supporting-frame; a pump-cylinder 5 two pocketsadjacent to said cylinder, and having communication with the interiorthereof, one of said pockets also having communication with theintake-opening and the other with the discharge-openingin thesupportingframe; and means on the supporting-frame adapted to detachablysecure the complete cylinder to said supporting-frame.

3. In a rotary pump, in combination, a supporting-frame having'aface-plate with intake and discharge openings therein, which openingscommunicate with intake and discharge pipes; a rotatable pump-headjournaled in said supporting-frame; a pump-cylinder having a face-plateadapted to lie in contact with the face-plate upon the supporting-frame;two pockets upon opposite sides of said cylinder, formed integraltherewith and communicatingr with the interior thereof, one of saidpockets also communicating with the intake-opening and the other pocketwith the dischargeopening in the supporting-frame; and two armspivotally mounted upon the supportingframe adapted to hold the completecylinder y in engagement with the face-plate of the supporting-frame.

4. In a rotary pump, in combination, a supporting-frame having aface-plate with intake and discharge openings therein, which openingscommunicate with intake and discharge pipes secured to said supportingframe; a shaft rotatably mounted in said supportingframe and extendingfrom said face-plate intermediate with the intake and dischargeopenings; a pump-head secured to said shaft; a pum p-cylinder having aface-plate adapted to engage the face-plate of the supportingframe; twopockets upon opposite sides of said cylinder, formed integral therewithand communicating with the interior thereof, one of said pockets alsocommunicating with the intake-opening and the other with thedischarge-opening in said supporting-frame; a head for said cylinder; abearing-bushing in said cylinder-head for said shaft; and two armspivotally secured to said supportingframe, having hand-screws adapted toimpinge upon the reverse side of said face-plate to hold said face-plateof the cylinder in firm contact with the face-plate of thesupportingframe.

IZO

5. In a rotary pun1p,in combination, a supthe discharge-opening in theface-plate ofthe porting-frame having avface-platesubstansupporting-frame; 'guide -pins for holding tiallylczenge shape,with intake and dissaidcylinder in position with relation to the chargeopenings near the extremities thereof, face-plate of saidsupporting-frame; a head zc 5 which openings communicate with intake andfor said cylinder; a bearing-bushing in said discharge pipes; arotatable shaft journaled cylinder-head; and two arms pivotally mount#in said supporting frameV andy projecting ed upon the supporting-frameand having through an opening near-the center of said hand-screwsforimpin'ging upon the rear face' face-plateya pump-cylinder vhaving afaceof the face-plate of the cylinder for detach- 25 1o plate coincidingsubstantially with'the faceablyisecuring said cylinder to said support-lplate of the supporting 'frame; .twg pockets ing-frame.

a jacent to said cylinder and forme integra n y therewith, which pocketshave communica- GEORGE A' WALKER" tion with the interior'of thecylinder, one of Witnesses: 15 said pockets also having communicationwith L. L. MILLER,

the intake-opening and the other pocket with GEO. L. OHINDAHL.- l

